20128353

素因数分解:

$3^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{61}}^1\times {\mathrm{827}}^1$

素因数の和:917

約数の個数: 32

約数和(自身を含む): 32855040

約数和(自身を除く): 12726687

約数列:

[1, 3, 7, 19, 21, 57, 61, 133, 183, 399, 427, 827, 1159, 1281, 2481, 3477, 5789, 8113, 15713, 17367, 24339, 47139, 50447, 109991, 151341, 329973, 353129, 958493, 1059387, 2875479, 6709451, 20128353]

約数ペア:

[(1, 20128353), (3, 6709451), (7, 2875479), (19, 1059387), (21, 958493), (57, 353129), (61, 329973), (133, 151341), (183, 109991), (399, 50447), (427, 47139), (827, 24339), (1159, 17367), (1281, 15713), (2481, 8113), (3477, 5789)]